Search

Global routing performance and saving energy are critical for Internet applications. Internet service providers use the internal Border Gateway Protocol for the distribution of external routes within the autonomous system. The balance between the trade-off relationship of energy efficiency and quality-of-service is necessary for autonomous systems in green networking. Past studies have shown that energy saving schemes exacerbate quality-of-service. However, the optimum use of resources balances the trade-off between energy efficiency and quality-of-service. Therefore, we propose a Green BGP model that balances the trade-off between energy efficiency and quality-of-service by optimizing the internal Border Gateway Protocol path selection policy. Border Gateway Protocol routers select a path considering the quality-of-service attributes and energy efficiency of the path within the autonomous system. The proposed model is compared with related techniques, and the results confirm the advantages of the Green BGP model that improves energy efficiency and maintains quality-of-service. [ABSTRACT FROM AUTHOR]

Concurrent Multipath Transfer (CMT) is a transport layer protocol which provides concurrent data transfer over the multiple paths. CMT improves the available bandwidth utilization, fault tolerance, robustness and reliability of the network. However, in multipath data transfer, destination receives out-of-order data chunk due to dissimilar delay and bandwidth of each path. It causes the serious problem of receiver buffer blocking, unwanted congestion window ( cwnd ) reduction and unnecessary retransmission, which significantly degrades the performance of CMT. Thus, this paper proposes an adaptive data chunk scheduling for CMT (A-CMT). The proposed method uses path delay and bandwidth as a factor of data chunk scheduling to adapt path conditions. The simulation results show that proposed method achieves better performance in terms of throughput; file transfer time and congestion window growth. The proposed method improves average throughput up to 13%. [ABSTRACT FROM AUTHOR]